mirror of
https://github.com/bazel-contrib/rules_foreign_cc
synced 2024-12-04 08:02:31 +00:00
55 lines
1.9 KiB
Python
55 lines
1.9 KiB
Python
|
"""A module defining convienence methoods for accessing build tools from
|
||
|
|
rules_foreign_cc toolchains
|
||
|
|
"""
|
||
|
|
|
||
|
|
load(":native_tools_toolchain.bzl", "ToolInfo")
|
||
|
|
|
||
|
|
def access_tool(toolchain_type_, ctx, tool_name):
|
||
|
|
"""A helper macro for getting the path to a build tool's executable
|
||
|
|
|
||
|
|
Args:
|
||
|
|
toolchain_type_ (str): The name of the toolchain type
|
||
|
|
ctx (ctx): The rule's context object
|
||
|
|
tool_name (str): The name of the tool to query
|
||
|
|
|
||
|
|
Returns:
|
||
|
|
ToolInfo: A provider containing information about the toolchain's executable
|
||
|
|
"""
|
||
|
|
tool_toolchain = ctx.toolchains[toolchain_type_]
|
||
|
|
if tool_toolchain:
|
||
|
|
return tool_toolchain.data
|
||
|
|
return ToolInfo(
|
||
|
|
path = tool_name,
|
||
|
|
target = None,
|
||
|
|
)
|
||
|
|
|
||
|
|
def get_cmake_data(ctx):
|
||
|
|
return _access_and_expect_label_copied("@rules_foreign_cc//toolchains:cmake_toolchain", ctx, "cmake")
|
||
|
|
|
||
|
|
def get_ninja_data(ctx):
|
||
|
|
return _access_and_expect_label_copied("@rules_foreign_cc//toolchains:ninja_toolchain", ctx, "ninja")
|
||
|
|
|
||
|
|
def get_make_data(ctx):
|
||
|
|
return _access_and_expect_label_copied("@rules_foreign_cc//toolchains:make_toolchain", ctx, "make")
|
||
|
|
|
||
|
|
def _access_and_expect_label_copied(toolchain_type_, ctx, tool_name):
|
||
|
|
tool_data = access_tool(toolchain_type_, ctx, tool_name)
|
||
|
|
if tool_data.target:
|
||
|
|
# This could be made more efficient by changing the
|
||
|
|
# toolchain to provide the executable as a target
|
||
|
|
cmd_file = tool_data
|
||
|
|
for f in tool_data.target.files.to_list():
|
||
|
|
if f.path.endswith("/" + tool_data.path):
|
||
|
|
cmd_file = f
|
||
|
|
break
|
||
|
|
return struct(
|
||
|
|
deps = [tool_data.target],
|
||
|
|
# as the tool will be copied into tools directory
|
||
|
|
path = "$EXT_BUILD_ROOT/{}".format(cmd_file.path),
|
||
|
|
)
|
||
|
|
else:
|
||
|
|
return struct(
|
||
|
|
deps = [],
|
||
|
|
path = tool_data.path,
|
||
|
|
)
|